Abstract: A long-life battery has an acid based heat source and a magnetic field source to improve the efficiency and life of the battery's ability to deliver an electrical charge. In particular, an open-ended steel insert having two acid containers containing a muriatic-hydrochloric acid mixture heats up an electrolytic solution that flows within the battery. A magnet disposed between the acid containers generates the magnetic field. The battery may be terminal-less and use insulated leads that extend from the battery. The insulated leads have connectors for coupling to an electrically-powered device.